Do not hardcode DPDK driver to 'uio'

The driver parameter should be taken from cluster model

Change-Id: Ieeafb9734208e736e7a3765a8e6f1954c38154bf
diff --git a/neutron/compute/nfv/dpdk.yml b/neutron/compute/nfv/dpdk.yml
index 90f9095..3f05d53 100644
--- a/neutron/compute/nfv/dpdk.yml
+++ b/neutron/compute/nfv/dpdk.yml
@@ -1,6 +1,4 @@
 parameters:
-  _param:
-    compute_dpdk_driver: uio
   linux:
     network:
       bridge: openvswitch